Question: Why Does My Car Sputter When I Accelerate?

What are the symptoms of a bad oxygen sensor?

First, what are the signs an O2 sensor may have gone bad?Check Engine Light Comes On.Noticeable Loss of Fuel Efficiency.Sulfur or ‘Rotten Egg’ smell from Exhaust.Black smoke from exhaust.Emission levels reach high levels.Your engine hesitates, skips, begins bucking or has power surges.More items…•.

Why does my car sputter when I press the gas?

Dirty or Failing Spark Plugs – The job of a spark plug is to ignite the fuel in the combustion chamber. Therefore, if one is dirty or faulty, your engine will struggle to start and sputter when you hit the gas. … A clogged fuel injector nozzle causes a car engine to shake and struggle to accelerate.

What could cause a car to sputter?

Over time, fuel injectors clog up causing slow acceleration and engine sputtering. If you catch the clogged injectors soon enough, they can be cleaned. If not, they will need to be replaced. When this device malfunctions, it sends the wrong information to the computer, resulting in a sputtering engine or rough running.

Why does my car sputter at low rpms?

Most likely if it has a carburetor the carburetor needs an adjustment, or spark plugs are old and worn out, air filter is possibly worn out and clogged with debris so its restricting the airflow. Oxygen sensor is a possibility. Or it could be a fuel filter/injector clogged/ fuel pump blocking proper fuel flow.

How can you tell when a spark plug is bad?

Symptoms of bad spark plugs can include:Reduced gas mileage.Lack of acceleration.Hard starts.Engine misfires.Rough idling.

Why is my car sputtering and losing power?

Dirty, old, worn out, clogged filters are a common cause of car sputtering and losing power. A clogged or failing catalytic converter can cause all kinds of problems for the engine, including sputtering and stalling. … Fuel injectors are oftentimes the culprit in a sputtering engine that loses power.

What causes rough idle and hesitation?

Causes of a rough idle. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues.

Why does my car stutter when I accelerate?

An acceleration problem is usually the result of insufficient fuel, air, or spark during the combustion process. Worn-out spark plugs or the electrical cables attached to them are one of the most common causes of cars stuttering.

How do I fix my car from sputtering?

How to Fix a Sputtering Car EngineInspect the components on the secondary ignition system. … Check the resistance of the ignition coil using an ohmmeter. … Check the condition of the fuel injectors. … Turn on the engine and check the fuel spray pattern on the throttle body injector if your particular vehicle has one.More items…

How much does it cost to fix the spark plugs?

The typical amount you will pay for spark plugs is between $16-$100, while for labor on a spark plug replacement you can expect to pay around $40-$150. It should take the mechanic a little over an hour or so to make the replacement for you.